A:小白兔的RNA能指导大肠杆菌的蛋白质合成
B:生物共用一套遗传密码子
C:大肠杆菌的遗传物质是RNA
D:小白兔控制血红蛋白合成的基因能进入大肠杆菌
给加下划线的字选择正确的读音。
只____隔zhī zhǐ 一水间____jiān jiàn
数重____山chóng zhòng 那畔____bàn pàn
意万重____chóng zhòng 聒____碎guō guā
根据短文内容和所给的汉语提示,写出短文空白处各单词的正确形式,每空限填一词。Miss White is from France. She can speak two____ (语言). She is a ____ (护士). She works in a ____ (医院)at night. She works very____ (努力). She likes to take a walk in a ____ (安静的) place. She likes ____ (动物) . She often goes to the zoo. Her cousin Bob is a reporter. He’s ____ (拍照)photos at the park . It’s____ (寒冷的) today. Look! Some people are swimming at the____ (泳池). Mr White is____ (感到惊讶的)to see it.
I like dancing, ______ I don't have enough time to practice it.